nixpkgs/nixos/tests/power-profiles-daemon.nix

import ./make-test-python.nix (
  { pkgs, ... }:

  {
    name = "power-profiles-daemon";
    meta = with pkgs.lib.maintainers; {
      maintainers = [ mvnetbiz ];
    };
    nodes.machine =
      { pkgs, ... }:
      {
        security.polkit.enable = true;
        services.power-profiles-daemon.enable = true;
        environment.systemPackages = [
          pkgs.glib
          pkgs.power-profiles-daemon
        ];
      };

    testScript = ''
      def get_profile():
          return machine.succeed(
              """gdbus call --system --dest org.freedesktop.UPower.PowerProfiles --object-path /org/freedesktop/UPower/PowerProfiles \
      --method org.freedesktop.DBus.Properties.Get 'org.freedesktop.UPower.PowerProfiles' 'ActiveProfile'
      """
          )


      def set_profile(profile):
          return machine.succeed(
              """gdbus call --system --dest org.freedesktop.UPower.PowerProfiles --object-path /org/freedesktop/UPower/PowerProfiles \
      --method org.freedesktop.DBus.Properties.Set 'org.freedesktop.UPower.PowerProfiles' 'ActiveProfile' "<'{profile}'>"
      """.format(
                  profile=profile
              )
          )


      machine.wait_for_unit("multi-user.target")

      set_profile("power-saver")
      profile = get_profile()
      if not "power-saver" in profile:
          raise Exception("Unable to set power-saver profile")


      set_profile("balanced")
      profile = get_profile()
      if not "balanced" in profile:
          raise Exception("Unable to set balanced profile")

      # test powerprofilectl CLI
      machine.succeed("powerprofilesctl set power-saver")
      profile = get_profile()
      if not "power-saver" in profile:
          raise Exception("Unable to set power-saver profile with powerprofilectl")

      machine.succeed("powerprofilesctl set balanced")
      profile = get_profile()
      if not "balanced" in profile:
          raise Exception("Unable to set balanced profile with powerprofilectl")
    '';
  }
)